RFID Tag On-Demand Activation via Disable Tab
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Solution Overview
Problem
RFID tag collisions due to multiple tags responding to interrogation signals lead to interference and incorrect data interpretation by readers, increasing complexity and cost in existing anti-collision technologies, and RFID tags are often active before being usefully deployed, consuming battery power without providing meaningful data.
Innovation Solution
Implementing on-demand and person-centric activation mechanisms for RFID tags, where tags remain inactive until manually or automatically activated, such as by skin contact, to reduce unnecessary responses and power consumption, using disable tabs or skin proximity to enable functionality only when needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple RFID tags are activated and respond to interrogation signals, then more data can be collected and tracked, but signal interference and collision increase causing incorrect data interpretation
Solution Approach 1:
The RFID tag is pre-configured with an inactive state before deployment. The tag is manufactured with all necessary components (antenna, IC chip, battery) but remains non-functional until activated by a specific trigger event such as skin proximity detection or manual activation, preventing premature responses and signal collisions
2Productivity
If RFID tags are activated before deployment, then they can provide data immediately, but unnecessary power consumption occurs without meaningful data transmission
Solution Approach 1:
The tag is prepared in advance with all functional components assembled and tested, but the power consumption is deferred until activation. The battery remains dormant and the IC chip remains in low-power mode until the activation trigger occurs, ensuring power is only consumed when the tag can actually provide meaningful data
Solution Approach 2:
The RFID tag transitions from a static inactive state to a dynamic active state based on environmental conditions. The system dynamically adjusts its operational state based on whether it is proximate to skin or has detected the appropriate trigger, optimizing power consumption by being active only when needed
3Loss of energy
If RFID tags remain inactive until activation, then power consumption is reduced and signal interference is minimized, but the tag cannot provide data until the activation event occurs
Solution Approach 1:
The tag is pre-configured with all necessary data and functional components during manufacturing, so that when activation occurs, data transmission can begin immediately without additional setup time. The only delay is the time to detect the activation trigger, which is minimized through efficient sensor design
Data Source
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AI summary
In embodiments of on-demand RFID tag activation, an RFID tag is configured so as to enable a person to activate the RFID tag if or when the person wishes. An RFID tag includes an integrated circuit (IC), an antenna coupled to the IC, activation circuitry, and a detachable disable tab. For an example implementation, the RFID tag is in an active state if the IC is capable of responding to an interrogation signal and is in an inactive state if the IC is incapable of responding to an interrogation signal. The activation circuitry is configured to establish the inactive state if the disable tab is attached to the RFID tag or to establish the active state if the disable tab is detached from the RFID tag. The disable tab, if attached to the RFID tag, may impose a short-circuit linkage against the activation circuitry to prevent operation of the tag.